| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| 'use strict'; |
| |
| /** |
| * @fileoverview This object provides a similar API to chrome.networkingPrivate. |
| * It simulates the extension callback model by storing callbacks in a member |
| * object and invoking them when the corresponding method is called by Chrome in |
| * response to a chrome.send call. |
| */ |
| |
| var networkConfig = { |
| /** |
| * Return the property associated with a key (which may reference a |
| * sub-object). |
| * |
| * @param {Object} properties The object containing the network properties. |
| * @param {string} key The ONC key for the property. May refer to a nested |
| * propety, e.g. 'WiFi.Security'. |
| * @return {*} The value associated with the property. |
| */ |
| getValueFromProperties: function(properties, key) { |
| if (!key) { |
| console.error('Empty key'); |
| return undefined; |
| } |
| var dot = key.indexOf('.'); |
| if (dot > 0) { |
| var key1 = key.substring(0, dot); |
| var key2 = key.substring(dot + 1); |
| var subobject = properties[key1]; |
| if (subobject) |
| return this.getValueFromProperties(subobject, key2); |
| } |
| return properties[key]; |
| }, |
| |
| /** |
| * Generate a unique id for 'callback' and store it for future retrieval. |
| * |
| * @param {function} callback The associated callback. |
| * @return {integer} The id of the callback. |
| * @private |
| */ |
| callbackId: 1, |
| callbackMap: {}, |
| storeCallback_: function(callback) { |
| var id = this.callbackId++; |
| this.callbackMap[id] = callback; |
| return id; |
| }, |
| |
| /** |
| * Retrieve the callback associated with |id| and remove it from the map. |
| * |
| * @param {integer} id The id of the callback. |
| * @return {function} The associated callback. |
| * @private |
| */ |
| retrieveCallback_: function(id) { |
| var callback = this.callbackMap[id]; |
| delete this.callbackMap[id]; |
| return callback; |
| }, |
| |
| /** |
| * Callback invoked by Chrome. |
| * |
| * @param {Array} args A list of arguments passed to the callback. The first |
| * entry must be the callbackId passed to chrome.send. |
| */ |
| chromeCallbackSuccess: function(args) { |
| var callbackId = args.shift(); |
| var callback = this.retrieveCallback_(callbackId); |
| this.lastError = ''; |
| if (callback) |
| callback.apply(null, args); |
| else |
| console.error('Callback not found for id: ' + callbackId); |
| }, |
| |
| /** |
| * Error Callback invoked by Chrome. Sets lastError and logs to the console. |
| * |
| * @param {Args} args A list of arguments. The first entry must be the |
| * callbackId passed to chrome.send. |
| */ |
| lastError: '', |
| chromeCallbackError: function(args) { |
| var callbackId = args.shift(); |
| this.lastError = args.shift(); |
| console.error('Callback error: "' + this.lastError); |
| // We still invoke the callback, but with null args. The callback should |
| // check this.lastError and handle that. |
| var callback = this.retrieveCallback_(callbackId); |
| if (callback) |
| callback.apply(null, null); |
| }, |
| |
| /** |
| * Implement networkingPrivate.getProperties. See networking_private.json. |
| * |
| * @param {string} guid The guid identifying the network. |
| * @param {function()} callback The callback to call on completion. |
| */ |
| getProperties: function(guid, callback) { |
| var callbackId = this.storeCallback_(callback); |
| chrome.send('networkConfig.getProperties', [callbackId, guid]); |
| }, |
| |
| /** |
| * Implement networkingPrivate.getManagedProperties. See |
| * networking_private.json. |
| * |
| * @param {string} guid The guid identifying the network. |
| * @param {function()} callback The callback to call on completion. |
| */ |
| getManagedProperties: function(guid, callback) { |
| var callbackId = this.storeCallback_(callback); |
| chrome.send('networkConfig.getManagedProperties', [callbackId, guid]); |
| }, |
| |
| /** |
| * Implement networkingPrivate.getNetworks. See networking_private.json. |
| * |
| * @param {string} guid The guid identifying the network. |
| * @param {function()} callback The callback to call on completion. |
| */ |
| getNetworks: function(filter, callback) { |
| var callbackId = this.storeCallback_(callback); |
| chrome.send('networkConfig.getNetworks', [callbackId, filter]); |
| } |
| }; |